Acuity Controls nLight ECLYPSE User Manual

Typical Modbus RTU
Device
2'-5 1/4"
Typical Modbus RTU
Device
Typical Modbus RTU
Device
Data Bus: Shielded Twisted Pair Cable
Typical Modbus RTU
Device
Data Bus Shields:
Connect to the ‘S’
terminal
Electrical
System
Ground
The shield of the data bus must be connected to
the electrical system ground at one point only –
usually at the Building Controller, when present
ECLYPSE
NET- NET + S
NET- NET + S
NET- NET + S NET- NET + S
NET- NET + S
Figure109: Typical Cable-Shield Grounding Requirements for a Modbus RTU Data Bus Segment with an ECLYPSE Controller located
in the Middle of the Data Bus
Device Addressing
Device addressing allows the coordinated transfer of messages between the master (the ECLYPSE Controller) and the
slave Modbus RTU device. For this, each device connected to the Modbus RTU data bus is identified by its address.
About the Device Address
Each slave device must have its own unique address number in the range from 1 to 247.
Refer to the device’s hardware installation guide for information about how to set its address number.
Modbus RTU Communication Data Bus Fundamentals
114
nLight ECLYPSE

Acuity Controls nLight ECLYPSE Specifications

General

Brand	Acuity Controls
Model	nLight ECLYPSE
Category	Controller
Language	English